She's probably stressed out, and maybe also uncomfortable with the new place. They can get pretty freaked out and then start peeing where you don't want them to.
Pet Urine Or Pet Odor Got You Down? talks about this a little.
We used to have this problem with a cat, but the odd thing was that she only peed in places where she was "comfortable". This would be where there were "us" smells, like the bed, or piled laundry. Before you say it, no, she didn't hate us, and was about the most loving cat you could ask for in fact.